<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Trang chu</title>
    <style>
        .header{
            padding:30px;
            background-color: #CCC;
            color:#fffff;
        }
        .menu{
            background-color:#234;
            color:#FFF
        }
        .menu ul li{
            float:left;
            padding; 10px 7px;
        }
        .menu ul{
            list-style-type:none;
        }
        .menu ul li:hover{

            background-color:#CCC;
            color: #000;
        }
        .menu:after{
            clear: both;
            display: table;
            content:""
        }
    </style>
</head>
<body>
    <div class="header">
        <h1>My Website</h1>
    </div>
    <div class="menu">
        <ul>
            <li>link 1</li>
            <li>link 2</li>
            <li>link 3</li>
            <li>link 4</li>
        </ul>
    </div>
    <div class="content">
        {% block content%}
        {%endblock%}
    </div>
</body>
</html>